Whenever I get a new device with a rechargeable battery I will...
The built-in batteries in the newer Mac unibody notebooks come pre-calibrated and
do not require regular calibration like the removable batteries in older Apple notebooks. Completely draining your battery is not only unnecessary, it's not good for the battery.
It shouldn't need calibration out of the box, but if you want to, just use it until it dies, then charge it all the way to 100%, then let it run all the way down again.
I know that feeling. I always deplete my battery on the first charge just because it feels right
Simply draining and recharging a battery is not calibration, and it doesn't need to be done to new Mac notebooks, as stated above.
Run on battery whenever you need to and plug it in whenever you can. You can plug or unplug any time you need to, regardless of the charged percentage, and you never need to completely drain your battery. Just make sure you don't run on AC power exclusively, as your battery needs to be used regularly to stay healthy.
The link below should answer most, if not all, of your battery/charging questions. If you haven't already done so, I highly recommend you take the time to read it.